Forging-machine



L. J. BERKELEY. FORGING MACHINE. APPLICATION FILED JUNE 24. I918- Patented Apr, 20, 1920.

LAUBENCE J, BERKELEY, 3 F RECEIVE, EGG-GEMINI ASSIGNQR T IZEBCULES MANUFAU TUBING COMPANY, OF RAGIIQE, VIISGGNSIN, A GR-POBATION OF WISCONSIN.

EORGING-ldiiGE-LINE.

pplicatioa filed June 24,

To all whom it may concern:

Be it known that I, LAURENCE LEY, a citizen of the llnited States, residing at Racine, in the'c'ounty oi Racine and State of Wisconsin, have invented certain new and useful Improvements in Forging- Machines, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof.

This invention relates more particularly to gripping and holding dies for forging machines or" the class shown and described in my United States patent applications Serial No. 210,599, filed January 'Z, 1918, and Serial No. 283,715, filed May 10, 1918.

The main objects of the invention are to provide for the adjustment of the laterally opening and closing for taking up wear or varying the distance between their working races when closed, and generally to improv the construction and operation of the dies.

li consists in the construction, arrangement and combination of parts as hereinafterparticularly described and pointed out in the claims' in the accompanying drawing like characters designate the same parts in both figures.

Figure 1 IS an end elevation and-partial cross section on the line 1-1, Fig. 2, of the gripping and holoing dies and associated parts of a forging machine embodying the invention; and 2 is a side elevation and partial longitudinal section thereof? on the line 2-2. Fig. 1.

Only such parts of'the forging machine as are necessary to illustrate and explain the invention are shown in the drawing, and the dies shown by way of illustration are speciall designed for forming heads railway spikes and the like, but by'moditicat ons which do not involve change in principle or mode of operation. they mav be ada ted for forging various other articles.

The mechanism or apparatus constituting the invention comprises two die supporting members land 2. either which may be movable toward and from the other.

In the present case the member 1 cons sts of a vertically reciprocating h ad. whi e the member 2 consists of a stationary bed which rnav be an integral part of the frame oi"- a forging machine. g The head 1, which may be actuated by Specification of Letters Patent.

Patented Apr. 20, 1920.

Serial No. 241,503.

any suitable means such for example, as is shown in either of the above mentioned applications, is formed on the under side with a longitudinal dove tailed or undercut groove 2 a cleft or slit 3, opening lengthwise into the groov and on opposite sides of the groove and cleft with semicylindrical or cylindro-segmental seats l, which are closed at one end by transverse webs 5.

A die 6, formed with a dove-tailed tongue 7, fitting the groove 2, is removably conn cted thereby with the head 1 andsecured in place by clamping bolts 8, passing through the head 1 and intersecting the cleft 3.

A die 10, removably fitted in a dove-tailed or undercut recess in the bed or member 2 and secured in place therein by a taper key or wedge 11, is formed or provided on oppo site sides of its working face or longitudinal center with inclines l2, converging downwardly or away from the movable head or member 1.

Two laterally opening and closing jaws or dies 13, which are adapted to cooperate with the dies 6 and 10 to grip and firmly hold spike bodies or other articles on four sides thereof, are formed with semicylindrical or cylindro-segmental shanks 14, fitting the seats l, in which they are pivotally held in place by pivot pins 15, secured at one end in the webs The lower free ends of the jaws 13 on which the working faces of the jaws are formed, are offset inwardly to close or approach each other underneath and close to the die 6. On their outer sides the jaws 13 are formed withinclines 16, adapted by engagement with the inclines 12 on the die 10 to close or force the working faces of the jaws toward each other when the die 6 approaches the die 10.

Springs 19, fastened by screws or otherwise to lugs on the head 1 and pressing outwardly against studs or projections 21 on the jaws 13. tend to open or force the jaws apart.

The opening or outward movement of the jaws is limited by the engagement of lugs 23 on the shanks of the jaws. with shoulders 24 on the head 1.

The jaws are formed between their workingis ces and the inclines 16. with longitudinal clefts 26. and are provided with taper pins 27, for spreading the clefts more or less and adjusting the working faces of the jaws relative to the inclines 16, to take up wear and to vary the distance between the working faces when the jaws are closed.

For upsetting or shaping the ends of forgings held between the dies 6 and 10 and jaws 13, as for forming heads on spikes, the machine is provided as shown in Fig. 2, with a reciprocating swaging die 80, which may be operated by any suitable means, such for eXample,-as are used the purpose in machines of this class, or such are shown and described in either of my said applications.

The dies 6 and 10 and the jaws i ay be recessed or formed at th ends, as shown by the drawing, to cooperate with the swaging die. 30 for forming overhanging spike heads of any desired shape.

To receive the impact of the die 30 against the dies 6 and 10 and the j aws 13, or against the forgings held between them, a backing or supporting block 32, which may be formed with or rigidly attached to the frame of the machine, is arranged to bear against the gripping and holding dies at their opposite ends when they are closed, as shown in Fig. 2.

In the operation of the mechanism as shown and hereinbefore described, a spike body or blank 35 or other article to be shaped, is placed on the lower stationary die 10 when the upper movable die 6 is raised and the jaws 13 are separated by the springs 19. The head 1 is then moved downward, carrying the die 6 toward the die' 10 into working position relative thereto, and forcing the working faces of the jaws 13 toward each other by the engagement of the inclines 16 with the inclines 12. The

spike body or blank to be forged is thus gripped and firmly held on four sides as shown by the drawing. Besides gripping and holding the spike body or blank for the subsequent operation thereon of the die 30, the gripping and holding dies and jaws 6, 10 and 13 may be made and utilized to shape the article held between them.

l Vhile the blank or article is thus gripped and held, the swaging die 30 is thrust against the end thereof and cooperates with the gripping and holding dies and jaws to upset and give the same the desired shape, for example, a spike head. as shown in Fig. 2.

The dies 6 and '30 are then withdrawn, the jaws 13 being openedor separated by the springs 19 simultaneously with the lif" ing of the head 1 with the die 6. T he openor outward movement of the jaws is limited by the engagement of the lugs 23 with the shoulders 24, before the inclines 16 pass outwardly beyond positions to properly engage with the inclines 12, when the head 1 again descends. The spike or other forging being th s released, is removed from the die 10, another spike body or blank to of die supporting be headed or shaped is placed thereon, either automatically by mechanism with which forging inachinesof the class shown and described in my said applications are provided, or manually, and the foregoing described operations are repeater.

Various modifications in details of con struction and arrangement of parts may be made without departure from the principle and scope of the invention as defined in the following claims.

1 claim: I r

1. In a forging machine the combination of two dies one of which is movable toward and from the other and one which has inclines converging away from theother, and two laterally opening and closing jaws pivotally connected with one of the dies and having inclines coiiperating with the inclines of the other die to simultaneously close the jaws when the dies are brought to gether.

'2. In a forging machine the combination of two dies one of which is movable toward and from the other and one ofwhich has inclines converging away from the other, two laterally opening and closing jaws pivotally connected with one of said dies and having inclines adapted to cooperate with the inclines of the other die and to simultaneouslyclose the jaws when one die approaches the oth r. stops for limiting the opening movement of the jaws and springs tending to open the jaws.

3. In a forging machine the combination of dies one which is movable toward and from the other and one of which has inclines converging away from the other, jaws pivotally connected with one of the dies and having inclines adapted to cooperate with the inclines of the other die for closing the jaws. said jaws having clefts between their inclines and working faces and taper pins inserted in said clefts for adjusting the working faces of the jaws relative to the inclines.

4. In a forging machine the combination of a head provided with a is and formed on opposite sides of the die with parallel cylindro-segmental seats closed at one-end by transverse webs. laterally opening and closing jaws. having cyl ndro-segmental shanks fitting in said seats and pivot pins secured in the wehs and connecting the with the head coaxially with their cylindrosegmental shanks and seats.

5. In a forging machine the combination members one of which is movable toward and from the other. dies removably attached to said members. laterally opening and closing jaws pivotally connected with one of said members on opposite sides of its die and formed on the outer sides with inclines. th other member being provided on opposite sides of the working face or" its die with inclines adapted by engagement with the inclines on the jaws to close the jaws wh n the c ies approach each other, and a reoi ting die movable toward and from and adapted to cooperate with the other dies the aws at one end thereof when they are closed.

(5. a forging machine the combination or". two die supporting members one of which 's movable toward and from the other, one

said members consisting of head orin ed with a longitudinal undercut groove,

cleft opening into the groove lengthwise nd cleft with cylindro-seginental seats closed at one end by a cross web and the other member being formed with an underreoi, and on opposite sides of the groove out longitudinal recess, die removably fit ted in said recess anl formed on opposite sides of its longitudinal center with paral- 2O lel inclines, a taper key for looking said die in said member, a die having a tongue remoVa-oly fitting the groove in the other member, clamping bolt passing transversely through the cleft in said member 2 for securing said die in saic, groove, jaws having eylindro-segmental shanks fitting and pivotally held in said seats, springs tending to open the jaws, and stops for limiting the opening movement of the jaws.

In witness whereof: 1 hereto atlix my signature;

LAULQE TCE J. BERKELEY. 

